The hitch platform should be less MPG impactful. I'd expect at least -2mpg on the roof carrier.
Although at 80mph the mpg will suffer so much maybe I should go with a percentage., because if you are only getting 18mpg it would push you down less than if you are getting 24mpg normally.
(does that make sense)
2017 Trailhawk V6
Last edited by Rand; 04-20-2017 at 08:02 PM.